JP3592792B2 - Automatic load heating control mechanism - Google Patents

Automatic load heating control mechanism Download PDF

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Publication number
JP3592792B2
JP3592792B2 JP11905495A JP11905495A JP3592792B2 JP 3592792 B2 JP3592792 B2 JP 3592792B2 JP 11905495 A JP11905495 A JP 11905495A JP 11905495 A JP11905495 A JP 11905495A JP 3592792 B2 JP3592792 B2 JP 3592792B2
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Prior art keywords
temperature
sensor
heater
moisture
moisture sensor
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JP11905495A
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JPH08291505A (en
Inventor
郁生 菅野
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Kitanihon Electric Cable Co Ltd
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Kitanihon Electric Cable Co Ltd
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Description

【０００１】
【産業上の利用分野】
本発明は、舗装面上の降雪を省エネルギ−で融雪するロ−ドヒ−ティングの自動制御機構に関するものである。
【０００２】
【従来の技術】
積雪寒冷地帯において、車道或は歩道上に降雪があると、車両のスリップ事故或は歩行者の転倒事故等の危険がある。このため、路面下に電熱ヒ−タ等を埋設し自動的に降雪を融雪することが行われている。しかしながら、これらの融雪装置は、路面の温度を検知する路面温度センサおよび降雪を電熱ヒ−タにより融雪してその水分を検知する水分センサが別々の場所に埋設されており、コンクリ−トやアスファルト舗装工事を行う場合、夫々のセンサを路面と同一平面上に設置する作業は困難であった。
また、温度センサを別の場所に埋設した水分センサは、別の場所で検知した温度センサの温度により水分センサ容器内の電熱ヒ−タを制御するため、誤差を生じる場合があった。
【０００３】
これら２個のセンサを１個にまとめることができれば設置作業の困難さも半減するが、路面と同一平面に埋設された１個の容器の路面側には水分センサが必要であり、かつ水分センサは水分センサ上の降雪を融雪するために温度センサの信号により水分センサ容器内の電熱ヒ−タに通電し加熱するため、温度センサが加熱され正確な温度を検知することが困難であるという問題を生じる。
【０００４】
【発明が解決しようとする課題】
本発明はこれらの問題点を解決し、水分センサと温度センサを１個の容器に収納させることにより舗装工事における作業性が向上できると共に、省エネルギ−で舗装面上の降雪を融雪することができるロ−ドヒ−ティングの自動制御機構を提供することを目的とする。
【０００５】
【課題を解決するための手段】
上記問題点を解決し、本発明の目的を達成するため本発明に係るロ−ドヒ−ティングの自動制御機構は次のように構成したことを特徴とする。すなわち、舗装面の降雪を融雪するため、温度センサ、水分センサおよび各センサの信号により舗装面下に埋設したロ−ドヒ−タ等に通電する制御盤とを備えた自動融雪機構において、舗装面と同一平面に陽極と陰極と絶縁部分とからなる水分センサを備え、且つこの水分センサを支持する水分センサ容器内に温度センサおよび水分センサ上の降雪を融雪するための電熱ヒ−タとを内蔵させたことを特徴とし、また、陽極と陰極間の電気抵抗が低下し、水分センサが水分を検知した場合にのみロ−ドヒ−タへの通電を可能とし、且つ内蔵された電熱ヒ−タへの通電を停止するように設定したことを特徴とし、また、温度センサの信号によるロ−ドヒ−タへの通電作動設定温度をＴ１ とし、電熱ヒ−タへの通電作動設定温度をＴ２ として、Ｔ１ ＞Ｔ２ ＞０℃と設定することを特徴とする。
【０００６】
【作用】
本発明を図面に基づいて作用を説明する。本発明のロ−ドヒ−ティングの自動制御機構は省エネルギ−で融雪することを目的としたものであり、寒くても降雪を検知しない間はロ−ドヒ−タに通電されない機構を有するものである。ロ−ドヒ−タ制御盤に設けられた作動機構により、水分センサからの信号、温度センサからの信号により、電熱ヒ−タおよびロ−ドヒ−タへの通電を制御するもので、温度センサの信号によるロ−ドヒ−タの設定作動温度をＴ１ とし、温度センサの信号による電熱ヒ−タの設定作動温度をＴ２ とし、Ｔ１ を１℃、Ｔ２ を０．５℃に設定した場合について図５により説明する。
先ず、水分センサにより降雪の有無を検知する。水分有りと検知した場合は、この時点でロ−ドヒ−タへの通電は可能となるが、もう１つの条件が満足されなければ通電されない。即ち、水分センサが水分有りと検知した場合は、この時点で電熱ヒ−タへの通電はＯＦＦとなるが、ロ−ドヒ−タへの通電は温度センサのの信号が温度センサの設定作動温度Ｔ１ 、即ち１℃より低い場合にのみ通電される。ロ−ドヒ−タに通電され、舗装面上の降雪が融雪されると共に舗装道路中に埋設された水分センサ容器も加熱され、水分センサ容器内の温度センサも加熱され温度センサが温度センサの設定作動温度Ｔ１ 、即ち１℃より高い温度を検知するとロ−ドヒ−タへの通電はＯＦＦとなる。
また、水分センサが水分を検知しない場合は、温度センサの信号が例えば０℃であってもロ−ドヒ−タへは通電されない。しかしながら、電熱ヒ−タの設定作動温度Ｔ２ より低いため電熱ヒ−タへの通電は行われ水分センサ面および温度センサが加熱される。したがって、水分センサ面に降雪があれば、常に融雪することができる。また、温度センサも加熱されるため、温度センサの信号が電熱ヒ−タの設定作動温度Ｔ２ 即ち０．５℃より高くなった場合には、電熱ヒ−タへの通電はＯＦＦとなる。
【０００７】
【実施例】
次に、本発明の実施例について図面を参照して説明する。
図１は本発明に係るロ−ドヒ−ティングの自動制御機構の一実施例の内、舗装部分１０の舗装面１１と、陽極１、陰極２および絶縁部分３とからなる水分センサが同一平面になるように水分センサ容器４を埋設した図を示す。舗装部分１０は一般的に用いられるコンクリ−ト、アスファルトまたはブロック等で有る。本発明に用いられる水分センサ容器の大きさは特に限定されないが、一例として９０〜１１０×９０〜１１０×４０〜６０ｍｍ程度で有る。舗装部分１０の下部には路面上に降雪した場合に融雪するためのロ−ドヒ−タ９が埋設され、水分センサ容器４の中には、温度センサ５および電熱ヒ−タ７等が内蔵されている。各センサおよび電熱ヒ−タは、図示しないリ−ド線により、水分センサ容器４のリ−ド線用孔８を通りロ−ドヒ−タ制御盤（図示せず）に連絡し、ロ−ドヒ−タ９も図示しないリ−ド線により前記ロ−ドヒ−タ制御盤に連絡している。このロ−ドヒ−タ制御盤はロ−ドヒ−タ９が埋設されている舗装道路または舗装歩道の近傍に設けられている。
図２は図１の平面図で、舗装面に現れるのはこの部分だけで有る。図２において、１は水分センサの陽極、２は陰極および３は絶縁部分を示す。この陽極、陰極および絶縁部分からなる水分センサは路面に露出しており、この上を自動車或は人が通り踏みつけるため、衝撃に耐えられるように水分センサ容器４内において補強されている。
図３および図４は本実施例に用いられるロ−ドヒ−タの一例を示す。図４に示す如くロ−ドヒ−タ９の断面は、銅−ニッケル合金線等の発熱線１４を耐熱ビニル等の被覆１５により保護された被覆線であり、路面を均等に加熱できるようにプラスチック等からなるスペ−サ１６により適当な間隔に保持されている。図３において１２はリ−ド線であり、一端を接続部１３によりロ−ドヒ−タ９に接続され、他端は前記ロ−ドヒ−タ制御盤にに接続されている。ロ−ドヒ−タ９は舗装された車道または歩道下部の舗装部分に埋設されるが、埋設深さは、車道の場合７０〜１００ｍｍ、歩道の場合は５０〜１００ｍｍ程度で有り、舗装面１１との中間に水分センサ容器が埋設される。
図３はユニットタイプのロ−ドヒ−タの一例で、スペ−サ１６によりロ−ドヒ−タ９を等間隔にスダレ状に編み込み、敷設し易くしたもので有り、その融雪能力は、２５０〜３００Ｗ／ｍ２ 程度で有るが、本発明はユニットタイプに限定されるものではなく、ケ−ブルタイプにも適用できる。
【０００８】
本発明は上記の如く構成されているので、路面上即ち水分センサ上に降雪が有ると、水分センサ面は常に融雪可能な温度を有しているので、水に変化する。陽極１、陰極２および絶縁部分３とからなる水分センサは、この水分により陽極１と陰極２間の電気抵抗が減少し、この電気抵抗の変化をリ−ド線によりロ−ドヒ−タ制御盤（図示せず）に信号する。ロ−ドヒ−タ制御盤はこの信号により、水分センサ容器４内の電熱ヒ−タ７への通電をＯＦＦにする。このため、温度センサは電熱ヒ−タにより加熱されず水分センサ容器４内の温度を正確に検知することができる。温度センサがその設定作動温度Ｔ１ より低い温度を検知した場合は、その信号をリ−ド線（図示せず）により前記ロ−ドヒ−タ制御盤に通信し、ロ−ドヒ−タ制御盤がロ−ドヒ−タ９に通電することにより、路面上の降雪は融雪される。また、温度センサがその設定作動温度Ｔ１ よりも高い温度を検知した場合は、その信号をロ−ドヒ−タ制御盤に通信するが、ロ−ドヒ−タ制御盤はロ−ドヒ−タ９に通電しない方式としている。即ち、ロ−ドヒ−タ９への通電は水分センサが水分を検知し、且つ温度センサ５が設定作動温度Ｔ１ より低い温度を検知したときのみ通電される。
水分センサによる水分の検知がない場合は、ロ−ドヒ−タ９へは通電されないが、水分センサ容器４内の電熱ヒ−タ７への通電は、図５に示す如く温度センサ５が設定作動温度Ｔ２ よりも低い温度を検知した場合に通電される。
この通電により電熱ヒ−タ７が加熱され水分センサ容器４内の温度が上昇し、路面と同一平面にある水分センサ面も加熱されて降雪を融雪することができる。また、温度センサ５も電熱ヒ−タ７により加熱され、設定作動温度Ｔ２ よりも高い温度を検知すると、電熱ヒ−タ７への通電はＯＦＦとなる。このように構成されているので、降雪の有無および路面温度の変化に対応してロ−ドヒ−タ９および電熱ヒ−タ７への通電が行われるため消費電力を極力抑えることができる。
【０００９】
【発明の効果】
以上説明してきたように、本発明は上述のとおり構成されているため、次に記載するような効果を奏する。
１）温度センサによるロ−ドヒ−タへの通電作動設定温度をＴ１ とし、電熱ヒ−タへの通電作動設定温度をＴ２ とし、適宜Ｔ１ およびＴ２ の温度を設定することにより、降雪を必要最小限の電力で融雪することができる。
２）舗装路面と同一平面に埋設するセンサ容器が１個で良いため、舗装工事の能率を高めることができる。
３）水分センサが水分を検知すると、水分センサ容器内の電熱ヒ−タへの通電が停止する構成を有するため、温度センサが電熱ヒ−タにより加熱されずに正確な温度を検知することができる。
【図面の簡単な説明】
【図１】本発明の一実施例を示すロ−ドヒ−ティング自動制御機構の内、温度センサ等を内蔵する水分センサの容器とロ−ドヒ−タと舗装面との関係を示す舗装道路の縦断面図。
【図２】図１の平面図。
【図３】本発明のロ−ドヒ−ティング自動制御機構において、路面下に施設されるロ−ドヒ−タの一例を示す平面図。
【図４】本発明の一実施例を示すロ−ドヒ−タとスペ−サの断面図。
【図５】本発明のロ−ドヒ−ティング自動制御フロ−チャ−ト。
【符号の説明】
１ 陽極
２ 陰極、
３ 絶縁部分、
４ 水分センサ容器、
５ 温度センサ、
７ 電熱ヒ−タ、
８ リ−ド線用孔、
９ ロ−ドヒ−タ、
１０ 舗装部分、
１１ 舗装面、
１２ リ−ド線、
１３ 接続部、
１４ 発熱線、
１５ 被覆、
１６ スペ−サ、
Ｔ１ 温度センサのロ−ドヒ−タ設定作動温度、
Ｔ２ 温度センサの電熱ヒ−タ設定作動温度。[0001]
[Industrial applications]
The present invention relates to an automatic load heating control mechanism for melting snow on a pavement surface with energy saving.
[0002]
[Prior art]
In a cold snowy region, if there is snowfall on a road or sidewalk, there is a danger of a vehicle slipping accident or a pedestrian falling over. For this reason, an electric heating heater or the like is buried under a road surface to automatically melt snowfall. However, in these snow melting devices, a road surface temperature sensor for detecting the temperature of the road surface and a moisture sensor for melting the snow by using an electric heat heater and detecting the moisture are embedded in separate places, and the concrete and asphalt are provided. When performing pavement work, it is difficult to install each sensor on the same plane as the road surface.
Further, in the case of a moisture sensor having a temperature sensor embedded in another location, an error may occur because the electric heat heater in the moisture sensor container is controlled by the temperature of the temperature sensor detected in another location.
[0003]
If these two sensors can be integrated into one, the difficulty of installation work is reduced by half, but a moisture sensor is required on the road surface side of one container buried in the same plane as the road surface, and the moisture sensor is In order to melt the snowfall on the moisture sensor, the electric heat heater in the moisture sensor container is energized and heated by the signal of the temperature sensor, so that the temperature sensor is heated and it is difficult to detect an accurate temperature. Occurs.
[0004]
[Problems to be solved by the invention]
The present invention solves these problems and can improve the workability in pavement work by storing the moisture sensor and the temperature sensor in one container, and also can melt snowfall on the pavement surface with energy saving. It is an object of the present invention to provide an automatic load heating control mechanism.
[0005]
[Means for Solving the Problems]
In order to solve the above problems and achieve the object of the present invention, an automatic load heating control mechanism according to the present invention is characterized in that it is configured as follows. That is, in order to melt the snowfall on the pavement surface, an automatic snowmelt mechanism including a temperature sensor, a moisture sensor, and a control panel that energizes a load heater or the like buried under the pavement surface in accordance with signals from the sensors. A moisture sensor comprising an anode, a cathode and an insulating portion is provided on the same plane as the temperature sensor, and a temperature sensor and an electrothermal heater for melting snow on the moisture sensor are built in a moisture sensor container supporting the moisture sensor. In addition, the electric resistance between the anode and the cathode is reduced, and the load heater can be energized only when the moisture sensor detects moisture, and the built-in electric heat heater is provided. characterized in that set to stop the current supply to, and b by the signal of the temperature sensor - Dohi - energizing operation set temperature of the motor and T 1, electric heat - the energization operation set temperature of the motor T as 2, T > T 2> and sets 0 ℃ and.
[0006]
[Action]
The operation of the present invention will be described with reference to the drawings. The automatic load heating control mechanism of the present invention is intended to melt snow with energy saving, and has a mechanism in which even if it is cold, the load heater is not energized while snowfall is not detected. is there. The operation mechanism provided on the load heater control panel controls the energization of the electric heat heater and the load heater based on the signal from the moisture sensor and the signal from the temperature sensor. b by the signal - Dohi - set operating temperature of the motor and T 1, heating heat by the signal of the temperature sensor - a set operating temperature of the motor and T 2, the T 1 1 ° C., was set T 2 to 0.5 ℃ The case will be described with reference to FIG.
First, the presence or absence of snowfall is detected by a moisture sensor. When the presence of moisture is detected, the load heater can be energized at this time, but will not be energized unless another condition is satisfied. That is, when the moisture sensor detects that there is moisture, the energization to the electric heating heater is turned off at this time, but the energization to the load heater is performed when the signal of the temperature sensor is set to the operating temperature of the temperature sensor. It is energized only when it is lower than T 1 , that is, 1 ° C. When the load heater is energized, the snowfall on the pavement surface is melted, the moisture sensor container buried in the pavement road is heated, the temperature sensor in the moisture sensor container is also heated, and the temperature sensor is set as a temperature sensor. When the operating temperature T 1 , that is, a temperature higher than 1 ° C., is detected, the power supply to the load heater is turned off.
When the moisture sensor does not detect moisture, the load heater is not energized even if the temperature sensor signal is, for example, 0 ° C. However, electric heat - low for heating heat than the set operating temperature T 2 of the motor - the moisture sensor surface and temperature sensor current is conducted to the motor is heated. Therefore, if there is snowfall on the surface of the moisture sensor, the snow can always be melted. Further, since the temperature sensor is heated, the signal of the temperature sensor is electrically heated heat - if it becomes higher than the data set operating temperature T 2 i.e. 0.5 ℃ is electric heat - energization of the motor is turned OFF.
[0007]
【Example】
Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an embodiment of an automatic load heating control mechanism according to the present invention, in which a pavement surface 11 of a pavement portion 10 and a moisture sensor comprising an anode 1, a cathode 2 and an insulating portion 3 are on the same plane. The figure which buried the moisture sensor container 4 so that it may be shown. The pavement portion 10 is a commonly used concrete, asphalt, block or the like. The size of the moisture sensor container used in the present invention is not particularly limited, but is, for example, about 90 to 110 × 90 to 110 × 40 to 60 mm. A load heater 9 for melting snow when snow falls on the road surface is buried under the pavement portion 10, and a temperature sensor 5, an electric heat heater 7 and the like are built in the moisture sensor container 4. ing. Each sensor and the electric heat heater are connected to a load heater control panel (not shown) through a lead wire hole 8 of the moisture sensor container 4 by a lead wire (not shown). The heater 9 is also connected to the load heater control panel by a lead wire (not shown). This load heater control panel is provided near a pavement road or a pavement sidewalk in which the load heater 9 is buried.
FIG. 2 is a plan view of FIG. 1, and only this portion appears on the pavement surface. In FIG. 2, 1 indicates an anode of the moisture sensor, 2 indicates a cathode, and 3 indicates an insulating portion. The moisture sensor composed of the anode, the cathode, and the insulating portion is exposed on the road surface, and is reinforced in the moisture sensor container 4 so as to withstand an impact because an automobile or a person steps on the road.
3 and 4 show an example of a load heater used in this embodiment. As shown in FIG. 4, the cross section of the load heater 9 is a coated wire in which a heating wire 14 such as a copper-nickel alloy wire is protected by a coating 15 made of heat-resistant vinyl or the like, and a plastic so that the road surface can be uniformly heated. It is held at an appropriate interval by a spacer 16 composed of the same. In FIG. 3, reference numeral 12 denotes a lead wire, one end of which is connected to the load heater 9 by a connecting portion 13, and the other end of which is connected to the load heater control panel. The load heater 9 is buried in a paved road or a pavement under a sidewalk. The buried depth is about 70 to 100 mm for a road and about 50 to 100 mm for a sidewalk. A moisture sensor container is buried between the two.
FIG. 3 shows an example of a unit-type load heater, in which the load heaters 9 are braided at equal intervals by a spacer 16 so as to be easily laid, and its snow melting ability is 250 to 300 W. / M 2 , but the present invention is not limited to the unit type, but can be applied to a cable type.
[0008]
Since the present invention is configured as described above, when there is snowfall on the road surface, that is, on the moisture sensor, the moisture sensor surface always has a temperature at which snow can be melted, so that the surface changes to water. In the moisture sensor composed of the anode 1, the cathode 2, and the insulating portion 3, the moisture reduces the electric resistance between the anode 1 and the cathode 2, and the change in the electric resistance is measured by a lead wire. (Not shown). The load heater control panel turns off the power supply to the electric heating heater 7 in the moisture sensor container 4 by this signal. For this reason, the temperature sensor is not heated by the electric heat heater, and can accurately detect the temperature in the moisture sensor container 4. If the temperature sensor detects a temperature lower than the set operating temperature T 1, the signal re - the by lead wires (not shown) b - Dohi - communicate with motor control board, Russia - Dohi - motor control board When the road heater 9 is energized, the snowfall on the road surface is melted. Further, when the temperature sensor detects a temperature higher than the set operating temperature T 1, the signal b - Dohi - but communicates to motor control board, Russia - Dohi - motor control panel b - Dohi - motor 9 The system is not energized. In other words, Russia - Dohi - energized moisture sensor to data 9 detects moisture, is and energized only when the temperature sensor 5 detects a temperature lower than the set operating temperature T 1.
If no moisture is detected by the moisture sensor, the load heater 9 is not energized, but the electric heater 7 in the moisture sensor container 4 is energized by the temperature sensor 5 as shown in FIG. It is energized when the temperature is lower than the temperature T 2 detected.
By this energization, the electric heater 7 is heated, the temperature in the moisture sensor container 4 rises, and the moisture sensor surface coplanar with the road surface is also heated to melt snow. The temperature sensor 5 is also electric heat - is heated by motor 7, upon detecting a temperature higher than the set operating temperature T 2, the heating heat - energization of the motor 7 is turned OFF. With this configuration, the load heater 9 and the electric heating heater 7 are energized in response to the presence or absence of snowfall and changes in the road surface temperature, thereby minimizing power consumption.
[0009]
【The invention's effect】
As described above, the present invention is configured as described above, and has the following effects.
By the energization operation set temperature of the motor and T 2, to set the temperature of the appropriate T 1 and T 2, - 1) B by the temperature sensor - Dohi - energizing operation set temperature of the motor and T 1, electric heat Snowfall can be melted with the minimum power required.
2) Since only one sensor container needs to be buried on the same plane as the pavement road surface, the efficiency of pavement work can be improved.
3) When the moisture sensor detects moisture, the power supply to the electric heat heater in the moisture sensor container is stopped, so that the temperature sensor can detect an accurate temperature without being heated by the electric heat heater. it can.
[Brief description of the drawings]
FIG. 1 is a diagram showing an embodiment of an automatic road heating control mechanism according to the present invention, in which a container of a moisture sensor including a temperature sensor and the like, a road heater and a paved road showing a relationship between the road heater and the paved surface; FIG.
FIG. 2 is a plan view of FIG. 1;
FIG. 3 is a plan view showing an example of a load heater installed under a road surface in the automatic load heating control mechanism of the present invention.
FIG. 4 is a sectional view of a load heater and a spacer showing one embodiment of the present invention.
FIG. 5 is a flow chart for automatically controlling a load heating according to the present invention.
[Explanation of symbols]
1 anode 2 cathode,
3 insulating parts,
4 moisture sensor container,
5 temperature sensor,
7 Electric heater,
8 holes for lead wire,
9 Load heater,
10 paved part,
11 paved surface,
12 lead wire,
13 connections,
14. Heating wire,
15 coating,
16 Spacers,
Of T 1 temperature sensor b - Dohi - data set operating temperature,
T 2 electric heat of temperature sensors - data set operating temperature.

Claims (3)

舗装面の降雪を融雪するため、温度センサ、水分センサおよび各センサの信号により舗装面下に埋設したロードヒータ等に通電する制御盤とを備えた自動融雪機構において、
舗装面と同一面に陽極と陰極と絶縁部分とからなる水分センサを備え、且つこの水分センサを支持する水分センサ容器内に温度センサおよび水分センサ上の降雪を融雪するための電熱ヒータとを内蔵させ、水分センサ上の水分を検出したときにはこの電熱ヒータへの通電を停止し、該容器内の温度が温度センサで正確に検出され、更に、この温度センサが所定温度以下になったときにロードヒータに通電し、この温度センサが設定温度以上になったときはロードヒータに通電せず、
他方水分センサによる路面の水分を検出しないときはロードヒータへの通電は停止し、前記温度センサの選定温度より低くなったときには電熱ヒータへの通電することを特徴とするロードヒーティングの自動制御装置。In order to melt the snowfall on the pavement surface, a temperature sensor, a moisture sensor and a control panel for energizing a road heater etc. buried under the pavement surface by a signal of each sensor,
A moisture sensor comprising an anode, a cathode, and an insulating portion is provided on the same surface as the pavement surface, and a temperature sensor and an electric heater for melting snow on the moisture sensor are incorporated in a moisture sensor container supporting the moisture sensor. When the moisture on the moisture sensor is detected, the power supply to the electric heater is stopped, and the temperature in the container is accurately detected by the temperature sensor. When the heater is energized and this temperature sensor exceeds the set temperature, the load heater is not energized,
On the other hand, when the moisture sensor does not detect moisture on the road surface, the power supply to the road heater is stopped, and when the temperature becomes lower than the temperature selected by the temperature sensor, the power supply to the electric heater is performed. . 陽極と陰極間の電気抵抗が低下し、水分センサが水分を検知した場合にのみロ−ドヒ−タへの通電を可能とし、且つ内蔵された電熱ヒ−タへの通電を停止するように設定したことを特徴とする請求項１のロ−ドヒ−ティングの自動制御機構。Only when the electric resistance between the anode and the cathode decreases and the moisture sensor detects moisture, the load heater can be energized and the built-in electric heater can be stopped. 2. An automatic load heating control mechanism according to claim 1, wherein: 温度センサの信号によるロ−ドヒ−タへの通電作動設定温度をＴ１ とし、電熱ヒ−タへの通電作動設定温度をＴ２ として、Ｔ１ ＞Ｔ２ ＞０℃と設定することを特徴とする請求項１のロ−ドヒ−ティングの自動制御機構。B by the signal of the temperature sensor - Dohi - characterized in that the current operating set temperature to another as T 2, is set to T 1> T 2> 0 ℃ - energizing operation set temperature of the motor and T 1, electric heat An automatic load heating control mechanism according to claim 1, wherein
JP11905495A 1995-04-21 1995-04-21 Automatic load heating control mechanism Expired - Lifetime JP3592792B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11905495A JP3592792B2 (en) 1995-04-21 1995-04-21 Automatic load heating control mechanism

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Application Number Priority Date Filing Date Title
JP11905495A JP3592792B2 (en) 1995-04-21 1995-04-21 Automatic load heating control mechanism

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JP3592792B2 true JP3592792B2 (en) 2004-11-24

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Publication number Priority date Publication date Assignee Title
DE19912248A1 (en) * 1999-03-18 2000-09-21 Joseph Voegele Ag Process for heating the screed of a paver, and electrical heating device
KR100806933B1 (en) * 2005-11-28 2008-02-22 이현종 Snow melting apparatus for road
KR101017437B1 (en) * 2010-02-08 2011-02-25 이정호 The spraying device for liquid thawing agents using the moisture detector
JP5613906B2 (en) * 2011-09-21 2014-10-29 福井県 Snow melting device control method using road surface heat flow sensor and road surface state transmission method to traveling vehicle
CN103132421B (en) * 2013-03-14 2015-09-09 云南云岭高速公路建设集团有限公司 The system of road surface automatic water-removing and deicing

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